Improvement in rotary printing-presses



2 Sheets Sh eet 2.

C. KAHLER. Rotary Printing-Press. 10,165,838, Patented July 20,1875.

Fig.2.

Fige 5slllllll IIIIHH] C C C C (1 3 9 G Q Q i i 16' witnesses: 7(426M041 Q r "6MDU/ fig/5L1 lnventon CONRAD KAHLER, OF CHICAGO,ILLINOIS, ASSIGNOR TO HIMSELF, MEL- VILLE O. EAMES, IVILLIAM L. OGDEN,WILHELM SEVERIN, AND PHILIPP EIWIRATH, OF SAME PLACE.

IMPROVEMENT IN ROTARY PRlNTlNG-PRESSES.

Specification forming part of Letters Patent No l65,83, dated July 20,1875; application filed April 17, 1875.

To all whom it may concern:

Be it known that I, CONRAD KAHLER, of the city of Chicago, in the countyof Cook and State of Illinois, have invented new and use fulImprovements in Printing-Presses, of which the following is a fulldescription, reference being had to the accompanying drawings, in whichFigure 1 is a longitudinal vertical section; Fig. 2, a top or plan viewof the tapes or belting below the main cylinder, and of the upperdelivery tapesand belts; Fig. 3, a broken section, showing a part of thelower delivery belts or tapes Fig. 4, a broken section, showing theregulator or tightener of the main cylinder-tapes; Fig. 5, a view of oneend of a printing-cylinder.

The object of my invention is to improve the operation and efljciency ofthat class of printing-presses known as web presses, or those whichprint in rolls and its nature consists in providing the press with tapesor belts below the main cylinder, to prevent the paper from bagging orgetting uneven in its movements; in providing two sets of tapes at thefemale cylinder, so as to deliver the sheets without the use of gripers,eccentrics, or cams; in providing the type-cylinders with steady-bearersor projections in the space or spaces left for margins, and in raisingthe fly or delivery boards, so as to dispense with the necessity of pitsor openings in the floor for operating them, all as more fullyhereinafter set forth and described.

In the drawings, A B represent the frame Work O, the main cylinder,which also acts as the impression or blanket cylinder for typecylinderE; D E, the printing or type cylinders; F, distributing-cylinder for thetypecylinder E; G, impression or blanket cylin der; H, the femalecylinder, and I the male cylinder, having the usual serratedcuttingknife, (not shown 5) J K L M, shafts provided with pulleys orwheels for operating the nipperbelts. J and M are also provided withadditional pulleys or Wheels for operating the delivery-tapes. N O,shafts provided with pulleys or wheels for operating the tapes beneaththe main cylinder; P, shaft provided with arms for adjusting thepressure of the tapes against the main cylinder 0; Q It, fly or deliveryboards; b, smoothing-board; a b, shafts provided with pulleys or wheelsfor operating the upper or inner ends of the delivery-tapes; c d,delivery-tapes; e f, nipper-belts; g, cross bar or shaft; h, grooves forthe cutting-knife in the female cylinder; i, steady-bearings on theprinting-cylinders j, arms on the shaft P k, pulleys or friction-wheelson the arms j,- l, main cylinder-tapes.

The. inking rollers and apparatus are not shown, as my improvements donot relate to that part of the press; nor do I confine myself to theparticular form or kind of press shown. Therefore, a particulardescription of such press will be unnecessary, further than to say thatthe main cylinder, printing and impression cylinders, and male andfemale cylinders are made and arranged in the usual form, except ashereinafter particularly mentioned. Below the main cylinder, or partlybelow and partly behind, I have arranged tapes I, on suitable shafts andpulleys,- as shown in Figs. 1 and 2. These tapes bear against the maincylinder, and hold the paper up to its work, so that there-is no baggingor slack to interfere with the movements of the paper, which renders itless liable to be torn, and less liable to interfere with the accuracyof the margins, and is of great use in starting around to the femalecylinder by these tapes. They also prevent the paper from falling backor dropping out when the press is stopped at or just after the out; andthey also enable me to run the press with considerably less tension onthe paper, which insures greater certainty in the action of thedelivery-nippers, as with these tapes they are relieved from sustainingthe weight of the paper, and are, therefore, less liable to tear out.When the paper is passed directly from the roll to the printing orimpression cylinders it is carried in with a fullness which is liable tomake it wrinkle in the press, which damages the printed sheet.

the paper through the press. as it is carried I obviate this difficultyby providing the press with a smoothing bar or board, S, at or near thepoint where the paper first enters the press, and, as the paper passesover this bar with a slight strain, the wrinkles are all taken out, andthe paper spread to its full width upon entering the press, which I havefound to be a very important advantage in operating this class ofpresses for, when the paper is started in accurately. and smoothly, it,with the aid otthe tapes below the main cylinder, will remain smooth anduniform up to the point of its delivery from the press. This also aidsin preventing the running of the margins.

In pr1nting-cylinders for curved plates, as heretofore used, when thespace left in the plate for the margin came in contact with theimpression-cylinders, it produced a jar or shock, which was not onlyunpleasant, but injurious to the machinery. I overcome this by placingon the printing-cylinders small bearing-plates, 01, which come up evenwith the face of the type, but so near the ends as not to take ink.These plates 5 are located so as to bridge the marginal spaces in thestereotype-plates, which leaves a smooth bearingsurface for continuousrunning between the printing and impression cylinders, without shock,jar, or noise; and by holding up the impression -cylinder in thismanner, I prevent the blurring of the lines next to or adjacent to themargin.

I am aware that bearing-hoops, either as a whole or in sections, havebeen applied to typecylinders; but they are for the purpose ofregulating the impression, while my device in no way effects that, asthe impression-cylinders bear against the type the same as before. Theyare permanently attached to the cylinders, and form guides for settingthe plates, as well as bearings for conveying the impression cylindersover the margins or breaks in the plates.

Heretofore, in discharging the sheets, or taking them oif from thefemale cylinder, gripers, operated by eccentric grooves or cams, wereused, which were exceedingly liable to get out of order, or be broken,when the press was run at a high speed. By my improvements I have beenable to dispense entirely with the use of these gripers, pins, or hooks,which left the sheets with holes, or tore them, and deliver the sheetsto the nippers by means of the tapes 0 b, as shown in Fig.1, the upperand lower flies being separate and distinct in this press, as in others.The flybelts e and f are made in the usual manner, and provided with theordinary nippers. The inner shaft of the fly-belts e is provided withadditional pulleys or wheels, as shown at Fig. 2, upon which the tapes 0run; and the inner ends of these tapes are supported upon a smallrevolving shaft, (6, having pulleys, and provided with suitable bearings, and located between the male and female cylinders, and as close toboth cylinders as the cutter will permit. These tapes 0 hold the paperin position until the nippers on the belt 6 come in contact with itsedge, when the sheet is drawn out and deposited upon the fly-board B.These nippers are arranged so that they take only each alternate sheet;the other sheet passes below, and is held in position by the tapes (I,which pass over pulleys on the shafts M and b, which are arranged asshown in Figs. 1 and 3. The belts d hold the sheets, which pass theupper fly, until the nippers on the belt f take them, when they aredrawn out and deposited upon the fly-board Q.

By this arrangement of belts and tapes I am enabled to dispense withmuch of the gearing, nippers, and shafting heretofore used fordelivering sheets, and am thereby enabled to raise the fly-boards to amuch higher relative position, which enables me to take hold of thepaper before it has passed so far around the female cylinder as to makeit difficult to catch the lower sheet-s. lt also enables me to dispensewith any pit or sink in the floor for operating the press, so that thepress can be used, when desired, on any ordinary floor.

The arms j are separately attached to the shaft P, so that either onemay be turned to adjust or regulate the tension of the tapes Z, and makethem uniform, without the trouble of making them of an exact length. henadjusted the arms j are held in place by the set-screws shown in Fig. 2.The shaft 9 may be used to carry the tail end of the sheet for the upperfly, or it may be omitted altogether, and the shaft 1) put in its place,so as to catch the lower sheets higher up, which will be an advantage infast delivery.

By elevating the fly boards I obtain greater facility in the dischargeof the sheets, and without the elevation of the bottom one it would beimpracticable to dispense with the gripers, as the sheets pass so farunder the female cylinder when the fly-board is left in its oldposition.

By these improvements I get a continuous rotary movement in all of theparts and a free delivery of the sheets, so that I can increase thespeed of the press nearly or quite one-half.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

I. The combination of the tapes Z, supported upon the shafts N, O, andP, with the main cylinder 0 and the cutting-cylinders H I, for holdingthe paper against the main cylinder, giving uniform margins, andsteadily delivering it to the discharge apparatus, substantially asspecified.

2. The tapes 0, in combination with the nipper-belts e and the cylinderH, substantially as and for the purpose described.

3. The combination of the tapes d with the nipper-belts f, cylinder H,and fly-board Q in a double-delivery press, elevated for taking thelower paper from the cylinder at the quarter turn from the cutter,substantially as set forth.

4. The combination of the tapes 0 (Z and nipper-beltse f with thecylinders H I, substanprinting, and giving a steady and uniform tiallyas and for the purpose specified. motion between the type-cylinder andimpres- 5. The steady-bearers a? on the type-cylinder, sion-roller,substantially as specified.

between the curved stereotype-plates, to pre- CONRAD KAHLER.

Vent the impression-cylinder from pressing Witnesses:

into the spaces between the plates and spaces L. L. BOND,

left for margins, and for preventing blurred O.W. BOND.

